计算机科学 ›› 2010, Vol. 37 ›› Issue (7): 285-286303.
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吴鹏,王爱侠,李晶皎
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WU Peng,WANG Ai-xia,LI Jing-jiao
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摘要: 多数小波阂值去噪方法需要根据噪声方差来计算相应的阂值,所以噪声方差的佑计将直接影响阂值去噪的效果。提出了一种新的相位匹配的噪声方差估计方法,利用该方法实时地逼近当前噪声,建立新的噪声的阂值求取方法。通过实验证明该方法能够大幅度提高信噪比,可以取得非常好的去噪效果。
关键词: 相位匹配,小波变换,噪声估计,小波阈值
Abstract: Most of the wavelet threshold denoising method needs to calculate the corresponding threshold.The estimation of noise variance will directly affect the effect of threshold denoising method.This paper presented a new phase matching of the noise variance estimation method,using the method in real-time estimate the current noise.A new method of noise threshold was set up.The experiments show that the method can greatly improve the signal to noise ratio and can be made a very good denoising effect.
Key words: Phascmatching, Wavelet transform, Noise estimation, Wavclet threshold
吴鹏,王爱侠,李晶皎. 信号相位匹配噪声估计的小波去噪方法[J]. 计算机科学, 2010, 37(7): 285-286303. https://doi.org/
WU Peng,WANG Ai-xia,LI Jing-jiao. Wavelet Denoising of Phase Matching the Signal Noise Estimation[J]. Computer Science, 2010, 37(7): 285-286303. https://doi.org/
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